Cedar Grove, Washington County, Maryland

Cedar Grove is an unincorporated community in Washington County, Maryland, United States and can be found on the National Register of Historic Places. The community lies about two miles south of MD Route 63 when traveling between Williamsport and Downsville, Maryland; it is located along the northern bank of the Potomac River just opposite the Whiting's Neck (West Virginia) promontory.

The C&O Canal National Historic Park, which runs parallel to the river, is a destination for locals and tourists alike. McMahon's Mill (also known as Charles' Mill), located just off the towpath was constructed in [ref date]; a campground and museum of the same name can be found just up the road, showcasing Civil Ware era weapons and artifacts, as well as providing accommodations for RVs and traveling groups. Due to flooding in past years, a segment of the canal just east of Cedar Grove remains closed, and those traveling along the canal have been forced to use the Avis Mill Road (which passes by the museum and mill) as a detour.